CVE-2026-81035 — Midday allows any member of a team to delete it.¶
Key facts
CVE-2026-81035 is a High (8.1) vulnerability: Midday allows any member of a team to delete it.. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-81035 |
| Severity | High (8.1) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-81035/ |
Details¶
English | 한국어
Description¶
Midday allows any member of a team to delete it. The delete procedure in apps/api/src/trpc/routers/team.ts authorises the caller with the team-access helper, which returns true for every row in the team-membership table irrespective of the role it records, and the data-layer function it calls re-checks the same helper and nothing else. The neighbouring procedures that remove or update a member in the same router each resolve the caller's role and refuse the request unless it is owner, so the check exists in the file and is not applied to deletion. Member is the role an invited user receives, so any invitee can remove the team and every record scoped to it, and the deletion enqueues the cleanup job with the stored bank-connection tokens, which the job then uses against the connected providers. The update procedure in the same router carries no role check either.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-81035 |
| CVSS Score | 8.1 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-81035/poc.py
Usage¶
# Run PoC against target
python3 poc.py --target <TARGET_URL>
# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>
⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.
Test Lab¶
This repository includes a Docker-based test environment with both vulnerable and patched applications.
Quick Start¶
# Clone and navigate to CVE directory
cd CVE-2026-81035
# Start both applications
docker-compose up -d
# Run tests
./run-tests.sh # Linux/Mac
./run-tests.ps1 # Windows PowerShell
Application Endpoints¶
| Application | URL | Status |
|---|---|---|
| Vulnerable App | http://localhost:8080 | Shows vulnerability |
| Patched App | http://localhost:8081 | Demonstrates fix |
Directory Structure¶
├── README.md # English documentation
├── README_KO.md # Korean documentation
├── poc.py # PoC detection script
├── docker-compose.yml # Container orchestration
├── run-tests.sh # Linux/Mac test runner
├── run-tests.ps1 # Windows test runner
├── vulnerable-app/ # Vulnerable version
│ ├── app.py
│ ├── Dockerfile
│ └── requirements.txt
└── patched-app/ # Fixed version
├── app.py
├── Dockerfile
└── requirements.txt
References¶
- https://github.com/midday-ai/midday
- https://github.com/midday-ai/midday/blob/e5f45ed0d49cdb34576373623c4579b72daa74c1/apps/api/src/trpc/routers/team.ts
- https://github.com/midday-ai/midday/issues/890
- https://www.vulncheck.com/advisories/midday-missing-owner-check-on-team-deletion
- https://github.com/midday-ai/midday/issues/890
Generated by PoC Generator on 2026-08-30T19:01:26.678718456
Frequently asked questions¶
What is CVE-2026-81035?¶
CVE-2026-81035 is a High (8.1) vulnerability: Midday allows any member of a team to delete it.. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-81035?¶
Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.
How do I block or mitigate CVE-2026-81035?¶
Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.
For authorized security testing and research only. See the full source and NVD record.